SE456758B - EXHAUST GAS CONTROL OF A TWO-TASK COMBUSTION ENGINE - Google Patents
EXHAUST GAS CONTROL OF A TWO-TASK COMBUSTION ENGINEInfo
- Publication number
- SE456758B SE456758B SE8402053A SE8402053A SE456758B SE 456758 B SE456758 B SE 456758B SE 8402053 A SE8402053 A SE 8402053A SE 8402053 A SE8402053 A SE 8402053A SE 456758 B SE456758 B SE 456758B
- Authority
- SE
- Sweden
- Prior art keywords
- exhaust
- guide
- piston
- slide
- combustion engine
- Prior art date
Links
- 238000002485 combustion reaction Methods 0.000 title claims description 6
- 230000001419 dependent effect Effects 0.000 description 2
- 238000010276 construction Methods 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000012528 membrane Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B41/00—Engines characterised by special means for improving conversion of heat or pressure energy into mechanical power
- F02B41/02—Engines with prolonged expansion
- F02B41/06—Engines with prolonged expansion in compound cylinders
- F02B41/08—Two-stroke compound engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02B—INTERNAL-COMBUSTION PISTON ENGINES; COMBUSTION ENGINES IN GENERAL
- F02B75/00—Other engines
- F02B75/02—Engines characterised by their cycles, e.g. six-stroke
- F02B2075/022—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle
- F02B2075/025—Engines characterised by their cycles, e.g. six-stroke having less than six strokes per cycle two
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/10—Internal combustion engine [ICE] based vehicles
- Y02T10/12—Improving ICE efficiencies
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Exhaust Silencers (AREA)
- Characterised By The Charging Evacuation (AREA)
- Valve Device For Special Equipments (AREA)
- Output Control And Ontrol Of Special Type Engine (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
- Emulsifying, Dispersing, Foam-Producing Or Wetting Agents (AREA)
Description
456 758 eller varvtalsberoende via en centrifugalregulator, i iavhängighet av öppningsfasens varaktighet (avgastidstvär- snitth Genom denna styrning uppnås en förbättring eftersom mindre färsk gas kan strömma ut. Styrvalsen belastas termiskt mycket kraftigt och insätts därför vid vattenkylda tvåtakts- förbränningsmotorer. Den mekaniska och även den elektroniska styrningen är mycket dyrbara. Vid den elektroniska reglerenhe- ten upptas information avseende varvtal, gasspjällinställning och undertryck i insugningskanalen och denna information styr en elektromotor som bestämmer vinkelläget för styrvalsen i ut- loppskanalen, Vid den mekaniska regleringen bearbetas endast vevaxelvarvtalen och inställs styrvalsen via en centrifugal- kraft-slirkoppling och ett inställningsstångssystem. 456 758 or speed-dependent via a centrifugal regulator, depending on the duration of the opening phase (exhaust time cross-section Through this control an improvement is achieved as less fresh gas can flow out. The guide roller is loaded very strongly thermally and is therefore used in water-cooled two-stroke internal combustion engines. In the electronic control unit, information regarding speed, throttle setting and negative pressure is recorded in the intake duct and this information controls an electric motor that determines the angular position of the guide roller in the outlet duct. In mechanical control, only the crankshaft speeds are processed and the control roller is set centrifugal force slip coupling and an adjusting rod system.
Syftet med uppfinningen är att åstadkomma en avgasstyrning för förändring av tvärsnittshöjden för avgasslitsen vid tvåtakts- förbränningsmotorer.The object of the invention is to provide an exhaust control for changing the cross-sectional height of the exhaust slot in two-stroke internal combustion engines.
Närmare bestämt syftar uppfinningen till att åstadkomma en av- gasstyrning som är realiserbar med hjälp av enkla medel och vilken styrs automatiskt i beroende av inre driftsbetingelser.More particularly, the invention aims to provide an exhaust control which can be realized by means of simple means and which is controlled automatically depending on internal operating conditions.
Enligt uppfinningen uppnås nämnda syften genom att utföra.en avgasstyrning av inledningsvis angivet slag så att såsom styr- organ är anordnad en styrkolv vilken är anordnad i en styr- cylinder och vilken står i förbindelse med plansliden via en kolvstâng, varvid styrkolven på den med kolvstången förbundna sidan belastas av avgastryck och på den motstående sidan belastas med hjälp av en fjäder.According to the invention, said objects are achieved by performing an exhaust gas control of the type indicated in the introduction so that as guide means a guide piston is arranged which is arranged in a guide cylinder and which is connected to the plane slide via a piston rod, the guide piston the connected side is loaded by exhaust pressure and on the opposite side is loaded by means of a spring.
Plansliden kan vara anordnad vinkelrätt eller snedställt mot cylinderaxelm Planslidens slaglängdsbegränsning uppnås med hjälp av ett anslag. Med hjälp av en fjäder hålls plansliden i utgångsläget. Genom det enligt uppfinningen föreslagna ut- förandet uppnås en efter driftsbetingelserna anpassad styrning av utloppstvärsnittet, varigenom såväl höga toppeffekter vid 456 758 stort utloppstvärsnitt som även ett brett varvtalsområde kan uppnås genom en varvtals- och belastningsavhängig minskning av utloppshöjden. Styrningen av plansliden sker automatiskt i beroende av avgastrycket i utloppskanalen resp avgasanlägg- ningen. Därigenom blir regleranordningen enkel i sin kon- struktion och uppvisar den få slitdelar.The plane slide can be arranged perpendicularly or inclined towards the cylinder shaft. The stroke limitation of the plane slide is achieved by means of a stop. With the help of a spring, the face slide is kept in the starting position. The embodiment proposed according to the invention achieves a control of the outlet cross-section adapted to the operating conditions, whereby both high peak powers at 456,758 large outlet cross-section and also a wide speed range can be achieved by a speed- and load-dependent reduction of the outlet height. The control of the face slide takes place automatically depending on the exhaust pressure in the outlet duct or the exhaust system. This makes the control device simple in its construction and has few wearing parts.
Uppfinningen beskrivs närmare nedan i anslutning till ett utföringsexempel därav. Den bifogade ritningen ger en schema- tisk framställning av en planslidanordning. Vid en tvåtakts- förbränningsmotor styrs avgasslitsen 4 i cylinderns 1 cylin- dervägg 2 med hjälp av en kolv 3. För förändring av avgasslit- sens 4 tvärsnittshöjd xl uppvisar avgasslitsen 4 en planslid 6. Plansliden 6 är rörligt i längdled styrd i cylindern 1 och är förbunden med en anordning 7. Anordningen 7 består av en styrcylinder 8 och en styrkolv 9 vilken är förbunden med en kolvstång 10.The invention is described in more detail below in connection with an exemplary embodiment thereof. The attached drawing gives a schematic representation of a planar sheath device. In a two-stroke internal combustion engine, the exhaust slot 4 in the cylinder wall 2 of the cylinder 1 is controlled by means of a piston 3. To change the cross-sectional height xl of the exhaust slot 4, the exhaust slot 4 has a flat slide 6. The flat slide 6 is movably longitudinally guided in the cylinder 1 and is connected to a device 7. The device 7 consists of a steering cylinder 8 and a steering piston 9 which is connected to a piston rod 10.
Styrkolven 9 glider i styrcylindern 8 och pâverkas av avgas- trycket i avgaskanalen S. Styrcylindern 8 uppvisar en avgas- tillförsel l2 och en avluftning l3. Plansliden 6 bringas med hjälp av en fjäder ll till utgångsläget. I det undre varvtals- området har avgasslitsen 4 en minimal tvärsnittshöjd xl sä.att ingen eller endast lite färsk gas kan utträda genom avgaskanalen 5 vid spolningen. Med höjningen av varvtalet stiger avgastrycket i avgaskanalen 5 och trycker via avgas- tillförseln 12 mot styrkolven 9 i styrcylindern 8, så att plansliden 6 förflyttas med hjälp av kclvstângen 10 och förändrar avgastvärsnittet. I det övre varvtalsomrädet för förbränningsmotorn når avgasslitsen 4 sin maximala tvärsnitts- höjd xz. Manövreringen av plansliden 6 kan likaledes ske via en av avgastrycket påverkad membrananordning.The control piston 9 slides in the control cylinder 8 and is affected by the exhaust pressure in the exhaust duct S. The control cylinder 8 has an exhaust supply l2 and a deaeration l3. The flat slide 6 is brought to the initial position by means of a spring 11. In the lower speed range, the exhaust slot 4 has a minimum cross-sectional height x1 so that no or only a little fresh gas can escape through the exhaust duct 5 during flushing. With the increase of the speed, the exhaust pressure in the exhaust duct 5 rises and presses via the exhaust supply 12 against the steering piston 9 in the steering cylinder 8, so that the flat slide 6 is moved by means of the piston rod 10 and changes the exhaust cross-section. In the upper speed range of the internal combustion engine, the exhaust slot 4 reaches its maximum cross-sectional height xz. The operation of the face slide 6 can likewise take place via a membrane device affected by the exhaust pressure.
Claims (2)
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DD83249888A DD226160A3 (en) | 1983-04-15 | 1983-04-15 | STARTING CONTROL FOR A TWO-STROKE INTERNAL COMBUSTION ENGINE |
Publications (3)
Publication Number | Publication Date |
---|---|
SE8402053D0 SE8402053D0 (en) | 1984-04-12 |
SE8402053L SE8402053L (en) | 1984-10-16 |
SE456758B true SE456758B (en) | 1988-10-31 |
Family
ID=5546488
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SE8402053A SE456758B (en) | 1983-04-15 | 1984-04-12 | EXHAUST GAS CONTROL OF A TWO-TASK COMBUSTION ENGINE |
Country Status (4)
Country | Link |
---|---|
JP (1) | JPS59200013A (en) |
CS (1) | CS251691B1 (en) |
DD (1) | DD226160A3 (en) |
SE (1) | SE456758B (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE3712750A1 (en) * | 1987-04-15 | 1988-11-10 | Bayerische Motoren Werke Ag | Two-stroke internal combustion engine, especially of reciprocating piston type |
DE3937679A1 (en) * | 1989-02-22 | 1990-08-23 | Zschopau Motorrad Veb | Outlet control for two=stroke IC engine - has piston shaped control member forming part of outlet channel |
-
1983
- 1983-04-15 DD DD83249888A patent/DD226160A3/en not_active IP Right Cessation
-
1984
- 1984-03-06 JP JP59041498A patent/JPS59200013A/en active Pending
- 1984-03-28 CS CS842259A patent/CS251691B1/en unknown
- 1984-04-12 SE SE8402053A patent/SE456758B/en not_active IP Right Cessation
Also Published As
Publication number | Publication date |
---|---|
DD226160A3 (en) | 1985-08-14 |
SE8402053L (en) | 1984-10-16 |
CS251691B1 (en) | 1987-07-16 |
SE8402053D0 (en) | 1984-04-12 |
JPS59200013A (en) | 1984-11-13 |
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Legal Events
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NUG | Patent has lapsed |
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